William G. Wilkoff Books

The Maternity Leave Breastfeeding Plan

By William G. Wilkoff

Average: 0.00, 0 Ratings

How to Say No to Your Toddler

By William Wilkoff M.D.

Average: 0.00, 0 Ratings

Teaching your toddler that “no means no” now can save you both suffering. But how do you say it so that he’ll understand?For many parents of toddlers, saying “no” over...

Jak powiedziec nie swojemu dziecku

By William G. Wilkoff

Average: 0.00, 0 Ratings

Coping with a Picky Eater: A Guide for the Perplexed Parent

By William G. Wilkoff

Average: 0.00, 0 Ratings

How to Say No to Your Toddler

By William Wilkoff M.D.

Average: 0.00, 0 Ratings

Teaching your toddler that “no means no” now can save you both suffering. But how do you say it so that he’ll understand?For many parents of toddlers, saying “no” over...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.